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Kernel 101 – Let’s write a Kernel - Arjun Sreedharan
Kernel 101 – Let's write a Kernel Hello World, Let us write a simple kernel which could be loaded with the GRUB bootloader on an x86 system. This kernel will display a message on the screen and then...
linux  kernel  os  assembly  c  programming  unix  tutorial 
yesterday by geetarista
Let's Write a Simple Kernel
A quick tutorial on writing a kernel for the x86 architecture.
kernel  tutorial  x86 
yesterday by Husafan
The Most Dangerous Places to Work in the USA | Kaggle
Exemplar kernel showcasing highcarts and leaflet for r.
kernel  kaggle  dataviz 
3 days ago by carlosviansi
Linux perf Examples
These are some examples of using the perf Linux profiler, which has also been called Performance Counters for Linux (PCL), Linux perf events (LPE), or perf_events. [...]
(me: dozens of examples, links, etc.)
performance  profiling  linux  kernel  tools  tips  example  cli  sysadmin  cpu  harddisk  hardwaresupport  links 
4 days ago by ezequiel
linux - IO Wait causing so much slowdown (EXT4 JDB2 at 99% IO ) During Mysql Commit - Server Fault
Q: [...] Now it hitting IO problem , the main IO Problem is not my process but EXT4's jdb2 , journeling system. It is at 99.99% and casuing CPU to wait for IO at every MySQL Commit. [...]
2012  forumthread  stackexchange  cpu  linux  kernel  harddisk  hardwaresupport  performance  issue  workaround  tips  sysadmin  filesystem  database 
4 days ago by ezequiel
linux - Diagnosing high CPU waiting - Server Fault
Q: I have a monitoring server that is running icinga/collectd/graphite with about 50 hosts. I have noticed high load/slugging performance on the box. If you take a look at top, you'll see:

Cpu(s): 0.6%us, 0.2%sy, 0.0%ni, 7.6%id, 23.4%wa, 0.0%hi, 0.2%si, 0.0%st

Notice the HUGE %wa value, which as far as I know means a network or disk bottleneck. [...]
2012  forumthread  stackexchange  linux  unix  kernel  performance  tips  cli  tool  sysadmin  harddisk  hardwaresupport  issue  cpu 
4 days ago by ezequiel

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